Regulator for dynamo-electric machines



(No Model.)

B. F. ORlON.

REGULATOR FOR DYNAMO ELECTRIC MACHINES. No. 311,141. Pate/ted Jan.20,1885.

UNITED STATES PATENT @Erica BENJAMIN F. ORTON, OF EAST SAGINAV,MICHIGAN.

REGULATOR FOR DYNAlVlO-ELECTRlC MACHINES.

SPECIFICATION forming part of Letters Patent. No. SlLMt-l, dated January20.1885.

A pplcaiicn filed February T, 1884.

.To @ZZ whom it may concern:

Be it known that I, BENJAMIN F. OirroN, a

citizen of the United Statis, anda resident of East Saginaw, in thecounty of Saginaw and State of Michigan, have invented certain new anduseful Improvementsin Regulator s for Dynamo-Electric Machines, of whichthe following is a specification.

' My invention relates to means for regulating or governing the currentsupplied by a dynamo-electric machine either by hand or automatically inaccordance with changes in the condition or vresistance of the externalor Working circuit to which the machine furnishes current.

In carrying out my invention I malte use of the well-kno`wn expedient ofvarying or ad justing the strength of the magnetic field in which thearmature of the machine moves, and this I effectby certain novel andsimplified combinations and arrangements of circuits and switchdevices', whereby the number ol" exciting-coils on the field-magnet andthe consequent strength ofthe magnetic field may be determined oradjusted according to the necessities ofthe case.

y invention consists in the novel combinations and arrangementshereinafter described and claimed, whereby the number of coils on thetwo or more legs or cores cfa held-magnet having a number of cores orlegs may be simultaneously varied, so as not to disturb the symmetry ofthe magnetic held, while at the same time the strength of the field isvaried.

Myinvention consists, also, in certain details of construction that willbe specified more particularly in the claims, after being firstdescribed in connection with the accompanying drawings, forming a partof this specification.

Figure lis a side elevation ot' a common form of field-magnet having myinvention applied to it. struction, and shows the manner of adjusting oroperating the switch that serves to determine the number ofexciting-coils in action automatically.

A AIZ A3 AL indicate the four legs or portions of a field-efforcemagnet, and N S the consequent pole-pieces forming the magnetic eld foran armature.

B B indicate ordinary cross-pieces or yokes, to which the cores or" themagnet are bolted Fig. 2 illustrates a detail of conl (No mcdcl) afterthe application of the exciting-coils of wire to said cores. rlhe coilson each leg are divided into twelve sections or bobbins, more or less,according to the capacity of the machine and the nicety ofthe-regulation desired. The sections or bobbins are preferably madeseparately by winding them on a suitable form of the same shape as themagnet-core, from which form they-are afterward removed and then slippedinto place on the core, or they are wound upon a suitably-shaped spoolor support that will' fit the core and may be slipped upon the sameafter the winding is complete. The two ends of each section or bobbinare left free for attachment to binding posts or blocks d, io whichlatter connections are also made from the switch er circuit controlling`device, that serves io determine the number ol'seciions in circuit.Opposite ends of adjoining bobbins are connected tothe saine post orblock-d in such way that, in the absence of other conditions, currentmay ilow through them all, as ordinarily, in the proper direction togive the desired polarity at the pole-pieces N S. The bobbins orsections in each portion A AJ ACs A' are numbered from l to l2,beginning at the outer ends.

B indicates a block or support, preferably of insulating material, iixedin any suitable position, and carrying four seis of contact` piecesinsulated from one another to correspond with the vfour sets of coils onA A2 A"A. The contact-pieces, twelve in number, corre spending to thecoil-sections on A, and to which said coil-sections are connected by thewires b, leading to the binding-posts d, are indicated by a, and thecontact-pieces, to which the bobbins in A` A A'L are respectivelyconnected, by a2 c:E c".

Mounted on a suitable shaft are four contact-making arms or pieces, bI)2 bJ b", adapted to sweep over and make electrical connection with thesets of contact-plates a c2 a c, and arranged symmetrically withrelation to the sets of contacts so as to simultaneously rest uponcontact-plates connected to bobbins that are at the same distance fromthe ends of the several legs A Az Az A'1 and are correspondinglynumbered. rEhe arms b b2 are electrically eonneeted with one another,but are insulated by any suitable means from the arms if b", whichlatter are also electrically connected with one another. The contactends ICO or portions of the arms are of such form or l of the lever F,and the link G to the long arm width as to make contact with one blockbefore breaking contact with a preceding block. The binding-posts d arepreferably double connectors-that is, have two binding-screws and orieesfor the insertion of the connecting wires, one orifice and screw servingfor the attachment ofadjoining terminals ot' adjoining bobbins, and theother for the attachment of the Wires leading to the insulatedcontactplates on the support B2. The binding-posts d are mounted on barsor supports M of insulating material, bolted or otherwise secured to theendpieces,B,and extending in line with the series of bobbins on each legot' the tieldmagnet. Thcterminals of the field-magnet cir` cuit areindicated by the signs and and the circuit through the coils passesfirst tothe bobbins on A,to and through that particular one whose endnearest the pole-piece is in connection through a block, (d, with thearm b, then through arni b2 and the bobbiiis on A2, which lie betweenthat one ot' them whose contact-blocklies under the arm band theterminal bobbin l, connected through wire g with the set of coils on A35 then through said set of coils, arms b3 b, and coils on A" in asimilar manner to the negative terminal indicated by the sign lf thecontact-arms b Zr D b" be turned by the insulated knob on b`,or by othersuitable means, so that the arms make contact with the first one of eachseries of blocks, a c2 a3 i4-viz., that one connected to the terminal ofbobbin numbered l2 on the several legs A A2 A3 A-it is obvious that allthe coils of the field-magnet will be in circuit. It' it be desired toreduce the tieldvmagnetism, the arms are turned in the direction ot' thearrow, thus disconnecting the bobbins on the several. legs A AL A3 A4,one after the other, beginning with those nearest the center on everyleg, so as not to disturb the symmetry of the tield. In the posit-ion ofthe parts shown the three sections on each leg nearest the center aredisconnected, but current flows through the remaining sections ou eachleg in the manner already described. It' any section ofthe coil becomesinjured,it may be replaced by simply disconnecting the bobbin terminalsfrom the binding-posts and slipping the bohbins off from the core.

In Fig. 2 means for governing the strength of the tield automaticallyare shown.

H indicates an electro-magnet in the main or principal circuit of 'themachine, as illustrated diagramniatically; and D, a crank at.- tached tothe shaft or spindle carrying the contact-arms. The movable core orarmature ot' the magnet is connected with the crank through a lilik, G,and a lever, F, or other suitable means, so that when the strength otthe magnet increases the core will be drawn up and will turn the spindleorshatt carrying the contact-arms, so as to throw out coil sections onthe four legs and reduce the strength of thefield-magnet. Themotionismultiplied by connecting the core of H to the short arm thereof. Othermechanical devices might be used for the same purpose. The weight of thecore and attached parts or a suitable retractor acts to throw thecontact-arms back, and place more coils in circuit when the strength ofthe current in H diminishes.

Other forms oi' binding-posts besides those shown might be placed uponthe arms or bars M, and the invention may obviously be applied to otherforms of field-magnets.

Vhat I claim as my invention is*- 1. The combination, in a dynamoelectric machine, ol" two sets of ieldmagnet coils or sections onseparate legs or coresof the field` magnet Ifor said machine, twocontact-arms electrically connected and forming the con iiection betweenthe two sets ot' coils, two corresponding sets ot' contacts connectedwith the coil-sections, all arranged as set t'orth, so that coils willbe simultaneously thrown out ot' circuit on both cores, and a magnetenergizcd by the current ofthe machine, and having a movable coreconnected with the shaft supporting the arms, as and for the puiposedescribed.

2. The combination, with base piece orsupport B2, ot' the t'our seriesof eoncentric`contacts, the four contactarms electrically connected inpairs, and connections from said contacts to coil-sections on the field-magnet legs, each pair ot' said contact-ari'ns serving ,as theelectrical connection whereby current flowing in the coils on onefield-magnet leg h'nds circuit te the coils on another field-inag-1ietleg, as and t'or the purpose described.

3. The combination, in a dynamo-machine regulator, of the block B2,contacts a a2 c c", arranged concentrically, two double circuitcloserseach adapted to `coin plete the circuit between two sets ot' contacts,and the coils connected with said contacts but insulated from oneanother, and sectional field-magnet coils connected with the cont-acts,as and for the purpose described.

4. rlhe combination, with the sectional field magnet coil and acircuit-controller for determining the number of sectionsthat shall bein circuit, of a series ot' binding-posts and a suit.- able supporttherefor carried by the crosspiece B and ranged parallel with theiieldmagnet.

5. The combination, with thesectional fieldmagnet coil, of thecircuit-controller having contactarms mounted on a common shaft, andarranged to move in the arc of a circle over suitable contacts, and amagnet in the main circuit of the machine mechanically connected withsaid shaft, as and for the purpose described.

Signed at New York, in the county of New York and State of New York,this 28th day of January, A. D. 1884.

BENJAMIN F. ORTON.

Vitiiesses:

Trios. TooMnY, WM. H. BLAiN.

IOO

